When starting a new decorating job we first mask and cover surfaces we're not decorating, then get on with the preparation work. There will almost always be cracks and dents to be filled, old paint to be sanded... but what often frustrates us is having to undo the previous decorator's job! One of our maxims is 'do the job well, and it'll be a lot easier to decorate next time'. So why, oh why do some decorators do things like this: